| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 7.68 | 8.04 | 6.89 |
| 2024 | 7.32 | 9.61 | 6.03 |
| 2023 | 5.45 | 7.25 | 4.42 |
| 2022 | 5.34 | 7.09 | 4.28 |
| 2021 | 9.47 | 13.94 | 6.34 |
| 2020 | 14.21 | 19.88 | 10.82 |
| 2019 | 10.49 | 15.36 | 2.54 |
| 2018 | 4.63 | 11.43 | 1.99 |
| 2017 | 17.54 | 32.78 | 8.24 |
| 2016 | 12.06 | 19.19 | 8.36 |
| 2015 | 12.73 | 21.63 | 4.43 |
| 2014 | 3.12 | 4.63 | 2.39 |
| 2013 | 2.9 | 4.2 | 2.14 |
| 2012 | 2.82 | 3.63 | 1.95 |
| 2011 | 2.96 | 3.93 | 2.06 |
| 2010 | 3.83 | 4.99 | 3.04 |
| 2009 | 3.61 | 5.46 | 1.46 |
| 2008 | 2.6 | 5.25 | 1.26 |
| 2007 | 4.24 | 6.49 | 1.91 |
| 2006 | 1.66 | 2.16 | 1.3 |
| 2005 | 1.73 | 2.41 | 1.23 |
| 2004 | 2.36 | 3.9 | 1.45 |